Overlayed text issue

[FoamyGuy]

Found an issue with the bottom two lines in the rendered screenshot being overlapped on this page: https://learn.adafruit.com/adafruit-io-hub-with-the-adafruit-funhouse/code-the-funhouse-iot-hub

[FoamyGuy]

This seems to affect guides that have only a single project file code.py Since it gets included in the "header" of the image rather than the dynamically generated portion it seems to be throwing off the logic that calculates where to draw the SD folder. I have a fix locally that I'll submit a PR for after some more testing.